Air cleaner



Nov. 13, 1928.

C. A. WlNSLOW ET AL AIR CLEANER Filed Sept. 25, 1924 2 Sheets-Sheet Nov.13, 19 28.

2 Sheets-Sheet C A WINSLOW ET AL AIR CLEANER Flled Sept 25, 1924 anuc-wfoo C. 4?? h/z'nalam STATES cams .e. wmsnow, or VALLEJO, am) ELBERT11mm, or BERKELEY, CALIFORNIA.

PATENT OFFICE.

AIR CLEANER.

- Application filed September 25, 1924. Serial No. 739 960.

lhe object of this invention is the provision of a device for removingdust and other impurities from air which is passed through a carbureterto produce a gaseous mixture providing the motive medium for theoperation of an internal combustlon engine.

The invention provides a device simple 1n construction and effective forthe purpose intended and designed to be located in the air supply of acarbureter for automatically eliminating dust and like impurities fromthe air, said device being compact and adapted to .be readily installedand which is reliable and efiective in operation.

Other objects and advantages will be apparent and suggest themselves asthe nature of the invention is understood.

While the drawings illustrate an embodiment of the invention it is to beunderstood that in adapting the same to meet'difi'erent conditions andrequirements, various changes in the form, proportion and minor" detailsof construction may be resorted to without departing from the nature ofthe invention.

Referring to the accompanyingdrawings forming a part of thespecification,

Figure l is a detail view showing the mvention in operative position,

Figure 2 is an enlarged sectional view of the cleaner on the line 2-2 ofFigure 1,

Figure 3 is a detail sectional view on the line 3-3 of Figure 2,

Figure 4c is a detail sectional view on the line 4-4 of Figure 2,

Figure 5 is a front elevational View of the device.

Corresponding and like parts are referred to in the followingdescription and designated inthe several views of the drawings by likereference characters. v

The numeral 10 denotes the radiator, 11 the fan, and 12 the carbureter,being well known parts of a motor vehicle propelled by an internalcombustion engine. In accordance with the present invention an aircleaner is provided and is coupled to the air intake of the carbureterand has an air pipe 13 coupled to the inlet thereof, the receiving endof the air pipe being flared and disposed adjacent the fan 11 to admitof the latter forcing air therein. v I

The air cleaner is preferably of sectional formation and comprises acasing 14 and aclosure 15 for the bottom thereof, the casing 14 beingpreferably of the outline of a truncated cone, which is closed at thetop and provided with a clean air outlet 18 which I is radially disposedand provided with a choke valve 19 and asmall outlet 20 for the escapeof any unconsumed fuel which may accumulate in the bottom 15 and whichmay be led off to a suitable point of discharge by a pipe 2O to preventexplosion from any. back-fire. A dust oulet 21 is provided in the casing14L for the discharge of a portion of the incoming air together with thedust and other impurities eliminated from the air. The oulet 21 has atangential arrangement with respect to the casing 14 and is located atthe bottom or larger end of the casing and adjacent the outer wall toadmit of the impurities being positively discharged by centrifugalaction. The inlet 22 is adjacent the top of the casing and at the sidethereof and is preferably disposed at a tangent thereto so that theincoming air has a whirling motion imparted thereto whereby the dust andother impurities are separated therefrom by centrifugal action and sincethe outlet is at the bottom of the casing the air is compelled to traveldownwardly therethrough.

T he casing 14 provides a separating cham her, the bottom 15 provides aclean air chamber, and the nozzle 17 provides a clean air outlet for theseparating chamber and an inlet for the clean air chamber. The flare ofthe petticoat or hood 16 is greater than the flare of the lateral Wallof the .casing .14, and due thereto the whirling up into the petticoator hood 16, then downwardly into the nozzle 17, then into the clean airchamber, and thence through the outlet 18 into the carbureter. As theair for the engine travels upwardly into the petticoat or hood 16, thatis in a direction reverse to the direction in which the whirling columnof air is passing through the separating chamber, any impurities in theengine air will be precipitatedto the bottom of this chamber. The outerside i of the nozzle 17 curves downwardly and outwardly to the lower endof the lateral wall of the separating chamber, anddue thereto the dustfalling on said side will be directed to the lower corner of thischamber and carried out through the discharge openmg 21 by the airpassing by the nozzle 17 and out through said opening.

In order to prevent dust from entering the crank case of the engine inconnection with which the air cleaner is used, the lower wall of thebottom 15 is provided with an opening 23 and a pipe 23. is secured atone end in this opening and at its other end communicates with the crankcase of the engine, and the breather pipe of the engine will be closedby any suitable means to prevent the entrance of air to the crank casethrough such pipe. The closure, will have to be removable in order topermit oil to be poured into the crank case through the breather pipe asis now commonly practiced.

The shaft 19 of the choke valve 19 is provided with an arm 19 to whichis to be connected any suitable means for controlling the choke valve19. As the choke valve 19 provides means through the medium of which theamount of air fed to the carbureter is regulated and controlled forstarting purposes and as this valve is-carried wholl by the air cleaner,the air cleaner may lie arranged in close relation. to the carburetorwith the result that both" devices will require but little space.Furthermore, as the choke valve 19 is carried wholly by the air cleaner,the engine cannot be started unless the air cleaner is in place.

In practice, the cleaner is located in the air intake of the carbureterand eliminates the impurities from the air before the latter passes intothe carburetor and in order to ing off through the outlet 21 carries offtheimpuritiesand prevents accumulation thereof in the cleaner.

What is claimed is 1. An air cleaner of the character specifiedcomprising a casing having an air inlet at one end and an air outlet atthe opposite end and an opening adjacent the outlet for the escape ofimpurities eliminated from the air, a nozzle within the outlet end ofthe casing and a cooperating petticoat within the inlet end of thecasing, said parts servingto deflect the air from a straight course toassist materially in the separation of the impurities therefrom,

2. An air cleaner of the character specified comprising a casing of theform of a truncated cone and having an air inlet at the smaller end andan air outlet at the larger end and an opening adjacent the outlet forthe discharge of impurities eliminated from the air, a nozzle within thelarger end of the casing, and a cooperating petticoat within the smallerend of the casing.

53, An air cleaner of the character specified comprising a casing oftruncated form having a tangential inlet at the smaller end and anoutlet at the larger end and an opening adjacent the outlet for thedischarge of impurities, a nozzle projecting upwardly from the bottom ofthe casing, and a petticoat depending from the top of the casing, saidpetticoat being of greater flare than the outer wall of the casing,

41. -An air cleaner comprising a casing of the form of a truncated coneand having a tangential air inlet at the smaller end, a

closure for the bottom of the casing having its bottom of roundedformation and provided with an air outlet, a nozzle and an opening forthe discharge of impurities separated from the air, and a petticoatdepending from the upper end of the casing and of greater flare than theouter wall of the latter.

,5. An air cleaner of the character set forth, comprising a separatingchamber provided with an air inlet and a dust outlet, a clean airchamber, a nozzle communicating at its discharge end with the clean airchamber and having its intake end located within the separating chamber,and a hood located within the separating chamber over the intake end ofthe nozzle.

6. An air cleaner of the character set forth, comprising a separatingchamber provided with a tangential air inlet and a tangential dustoutlet, a clean air chamber having a diametrical outlet, a nozzlecommunicating at its discharge end with the clean air chamber and havingits intake and positioned within the separating chamber, and a hoodwithin the separating chamber over the intake end of the nozzle.

. '7. An air cleaner of the character set forth, comprising a separatingchamber provided with an air inlet and a dust outlet, a clean airchamber provided with a breather opening and a carburetor opening, anozzle communicating at its discharge end with the clean air chamber andhaving its intake end located within the separating chamber, and? a hoodlocated within the separating chamseparating chamber over the intake endof 20 her over the intake end of the nozzle,

8 An air cleaner of the character set forth, comprising a separatingchamber provided with an air inlet and a dust outlet,

a clean air. chamber provided with an outlet, a choke valve located insaid outlet, a nozzle communicating at its discharge end with the cleanair chamber and having its intake end located within the separatingchamber, and a hood located within the separating chamher over theintake end of the nozzle.

9. An air cleaner of the character set forth, comprising a separatingchamber provided with a tangential air inlet and a tangential dustoutlet, a clean air outlet nozzle located within the chamber andprovided with a downwardly and outwardly curved outer side, and a hoodpositioned within the the nozzle,

10. An air cleaner of the character set forth, comprising a separatingchamber pro vided at one end with a tangential air inlet and at itsother end with a tangential dust outlet, a clean air discharge-nozzlearranged axially within the chamber and provided with. a downwardly andoutwardly curved inner side, and a hoodlocated within the chamber overthe intake end of the nozzle, the lateral walls of the chamber and hood.

being flared and the hood being arranged atthe intake end of the chamberand the nozzle at the outlet end of the chamber,

In testimony whereof we afiix our s gnatures.

CHARLES A. WINSLOW, ELBERT J. HALL.

